The Securities and Exchange Commission (SEC) is asking the Stock Exchange of Thailand (SET) to study and consider whether to review the use of trading programs, including high-frequency trading (HFT), to determine the current trading volume and whether they are appropriate for the Thai bourse. The SEC asked the SET to submit the results of a study on trading programs, which account for 35-36% of the total trading value, while HFT accounts for 10%-15% of the trading value. The volume generated via trading programs on the SET has greatly increased from previous years, though it is lower than in other regional exchanges and developed markets in the West, said Ms Pornanong. "We have to find out what is the most appropriate rate for the Thai stock market." Most market makers tend to use DW risk management by using trading programs or conducting arbitrage using HFT.
